Sand distributer and packer



(No Model.)

S. L. ROBERTSON.

SAND DIsTRIBU-TER AND PAGKER.

P ented Jan. 3, 1888.

ml'nees,

UNITED STATES PATENT OEEICE.

SAMUEL L. ROBERTSON, OF CLEVELAND, OHIO.

SAND DISTRIBUTER AND PACKER.

SPECIFICATION forming part. of Letters Patent No. 375,895, dated January3, 1888.

Application filed October 14, 1887. Serial No. 252,391. (No model.)

.To all whom it may concern:

Beit known that I, SAMUEL L. ROBERTSON, of the city vof Cleveland, -inthe county of Cuyahoga and State of Ohio, have invented certain new anduseful Improvements in Sand Distributcrs and Packers for MoldingApparatus, of which the following is a full, clear, and exactdescription, such as will enable one skilled in the art to make and usethe same.

In the accompanying drawings, which form a part of this specification,the like parts are represented in the several figures bythe sameletters.

In the drawings, Figure l is a side elevation of myimproved device. Fig.2 is a partial section of the fiask or core-box, showing the sanddistributers and packers in operative position'. Fig. 3 shows amodification of the device as shown in Fig. I, to be used in themanufacture of extra long pipe. Fig. 4 is an end view of the fiask orcore-box from the lower cnd. Fig. 5 is a section taken on the line x xin Fig. l; and Fig. 6 is an end view from the lower end, showing theshovels-and rakes pivotally connected to the carriers instead of beingfixed thereto, this being a modification for the purpose of adapting thedevice to making ingotmolds. Fig. 7 is a verti cal section of one shoveland its carrier when pivotally connected together.

My invention relates to devices for automatically distributing and`packing the sand to form a mold for casting pipes and other likearticles, and it consists in the construction and combination ot' partsherein described, and pointed out'delinitely in the claims.

Referring to the parts by letter, A represents the supporting frameworkof the device, and H the core-box or flask in which the molds are made,which liask may be removably hinged to said frame-work at a suitableheight by the perforated lugs 7L h and the pin h2, and is adapted to beswung beneath the center of the device, as shown in Fig. l.

Near the upper end of the frame A the vertically-movable rod Gis passedloosely through a sleeve, c, which is mounted in bearings D D on theframe-work. The sleeve c is provided with a spline or feather, whichengages with a groove, d, in said rod, whereby the rod C is permitted avertical movement, but is compelled to revolve by the revolution of saidsleeve. A beveled gear, Zi', attached to said said sleeve, meshes with abeveled gear, b, on the end of the shaft to which the power isappliedthroughthepulleyF. Tothelowerendof this rod O carriers,preferably in the form ot' arms e e, bolted to a disk, E, are rigidlyattached, and on the lower ends of said arms a combined shovel and rake,I, is secured, for the purpose of distributing and packing the sand. Theshovels z' are inclined on their lower faces from their ends upward tothe points of attachment with the arms, and they are attached so that inrevolving the rakes i" move in front of the shovels.

The operation of the device is' as follows: The flask or core-box Hbeing swung into position and the pattern or core barrel placed therein,the shovels and rakes are permitted to drop to the bottom by removingthe pivoted catch g. The sand is then introduced in a continuous streamfrom the chute I, and the carriers e e are revolved through theinstrumentalities above described. The weight of the rod G and the othervertically-moving parts attached thereto furnishes the necessarypressure, which causes the shovels to pack the sand after it has beendistributed by the rakes. The inclined faces of the shovels and the constantly-increasing quantity of sand cause the shovels to revolve spiraliy until they are forced out of the flask, leaving the sand tightlypacked behind them.

- In order that the pressure of the shovels may be varied ascircumstances may require,

I attach a swivel oreyebolt, a', to the` upper end of the rod C andconnect it by means of the rope or cord a to a weight, V, said cordbeing made to pass over a sheave, B, mounted on a frame-work, A. Byvarying this weight thelpressure of the shovel may be varied to anyextent.

In the manufacture of extra long pipe it is necessary to adoptsomethingmore rigid than the arms e e as carriers for the shovels. ThisI do, as shown in Fig. 3, by attaching acylinder, e3, to the disk E andattaching the short arms e c, bearing the distributers, to its vlowerperiphery.

The details of construction may be further modified, as shown in Fig. 3,wherein ashovel,

i, and a rake, i', are attached to separate carriers e e, instead ofhaving the Shovel and rake combined, as shown in Figs. 1 and 2; and theshovels and rakes may be pivoted to their carriers, as shown in Figs. 6and 7, to adapt the device to forming ingot or other molds not circularin form.

In Fig. 5 a set screw, G, is shown attached to the cross-piecef of theframe, and as the llask II rests against the end of this screiir itsposition may be exactly adjusted by turning this screw in or out, asrequired.

Having thus described my in vention` what I claim asneW, and desire tosecure by Letters Patent, is

1. In a sand distributer and packer,thc conibination of avertieallynloving rod and means for revolving the same, with carriersrigidly attached to the lower end ot' said rod, and rakes and inclinedshovels attached to said carriers, substantially as and for the purposespecified.

2. In a sand distributer and packer, the combination of a rotatingsleeve jonrnaled in the frame and having a spline or feather, and agroovcd rod passing loosely through said sleeve, with carriers rigidlyattached to the lower end of said rod, and rakes and inclined shovelsattached to said carriers, substantially as and for the purposespecified.

3. In asanddistributer and packer, the conibination ofavertically-movable rod and means for revolving the same, with carrierson said rod, fakes and inclined shovels on said earriers, and acounterbalai'icing-weight con t nectedysubstantially as described, withthe upper end of said rod, for the purpose specilied.

4. In a sand distributor and packer, the conibination of acorebox orflask and means for removably hinging the same to the trame, with anadjustingscrew, G', and the revolving carriers, bearing the rakes andinclined shovels herein described, for the purpose specified.

SAM. L. ROBERTSON.

Witnesses:

E. L. THURsToN, LEONARD W A'rsoir.

